Stable iron carbonyl composition



Patented Apr. 21, 1931 1 UNITED sr rEs PATENT OFFICE MARTIN Mfi'LLER-CUNRADI, OF LUDWIGSHAEEN-ON-THE-RHINE, AND AN NELIESE KOS- SUZTH, OF NHEIM-FEUDENHEIM, GERMANY, ASSIGNORS T I. G. FABBENIN- DUSTRIE AKTIENGESELLSCHAFT, QF FRANKFORT-ON-THE-MAIN, GERMANY, A. GOR- ronla'rron or GERMANY STABLE IRON CARBONYL COMPOSITION No Drawing. original application filed April 22, 1925, Serial No. 25,140, now Patent No. 1,722,076, and In Germany December 5 1924. Divided and this application filed October 11 1928. Serial No. 311,957.

5 No. 1,722,076 dated July 23, 1929, and for which I have filed applications in Germany B. 116940 December 5, 1924; Great Britain 11455'May 2, 1925, now Patent No. 260,639 sealed January 27, 1927 France 203114 May 1', 1925, now Patent No. 597517 published November 3, 1925; Italy 334.1239, May 11, 1925, now Patent No. 240009 granted July .20, 1925; Belgium 258699 April 28, 1925,.now

Patent No. 325,245 granted. May 15, 1925; Canada 304,518 July 11', 1925, now Patent No. 262,600 granted July 13, 1926; Australia 13907, July 7, 1925, now Patent No. 2390725 granted July 7, 1925; Russia 33850/11393 August 31, 1926.

Iron carbonyl, as is known, whether by itself or dissolved in a diluent has the prop-- erty of being sensitive to light by the action of which it is more or lessrapidly altered with the formation of a voluminous precipitate. 1

, We have found that the decomposition of iron carbonyl by light can be retarded or even avoided by the presence of certain compounds and that solutions of iron carbonyl in hydrocarbons or in mixtures of hydrocarbons containing such compounds have ahigh stability. As compounds capable of exerting such desirable influence we have found, for example, organic compounds having a substantiall higher molecular weight than the solvent ydrocarbon and soluble or colloidallysoluble in the mixture of iron-carbonyl and the hydrocarbon or mixturesof hydrocarbons, the said substances of high molecular weight probably acting as protective colloids. Examples of such organic compounds probably acting as protective colloids are caoutchouc, adeps lance, naphthenicacids, also} hydrocarbons of a moderately high molecular,

' even 0.01 to 0.001 per cent will prove sufficient. In the case of kerosene very stable solutions of iron carbonyl in gasoline or benzine'are obtained by adding so much kerosene that the mixture has a specific gravity 0.7 5.'

Several additions of suitable compounds may be made at the same time and the additions may be made either to the solutions intended for direct use, for example gasoline with about 0.3 per cent of iron carbonyl, or to more concentrated solutions of iron carbonyl as may be prepared for shipping or warehous- 1ng.

.What we claim is 1. As a composition of matter a solution of iron carbonyl in a hydrocarbon inwhich the iron carbonyl is decomposable by exposure to light and an organic compound of considerably higher molecular weight than said hydrocarbon and soluble therein.-

2. As a composition of matter a solution of iron carbonyl in gasoline in which the iron carbonyl is decomposable by exposure to light and an organic compound of considerably higher molecular weight than gasoline and soluble therein.

3. As a composition of matter a solution of iron carbonyl in a hydrocarbon in which the iron carbonyl is decomposable by exposure to light and up to about 0.1 per cent of an organic compound of considerably higher molecular weight than said hydrocarbon and soluble therein. v

4. As a composition of matter a solution of iron carbonyl in gasoline in which the iron carbonyl is decomposable by exposure light I and u to about 0.1'per cent of an organic compoun of considerably higher molecular weight than gasoline and soluble therein.

5 As a composition of matter a solution of iron carbonyl in hydrocarbons in which the iron carbonyl is decomposable by exposure to light and caoutchouc. 1

6. As a composition of matter a solution of iron carbon 1 in gasoline in which the iron carbonyl is ecomposable by exposure to light and caoutchouc.

7 As a composition of matter a solution of iron carbonyl inhydrocarbons in which the iron carbonyl is decomposable by exposure to light and up to about 0.1 per cent of caoutchouc.

8. 'As a composition of matter a-solution of iron carbonyl in gasoline in which the iron carbonyl is decomposable by exposure to light and up to about 0.1 per cent of caoutchouc.

9. As a composition of matter a solution of iron carbonyl in a hydrocarbon in which the iron carbonyl is decomposable by exposure to light and a hydrocarbon of considerably higher molecular weight than the hydrocarbon first mentioned and soluble therein.

10. As a composition of matter a. solution of iron carbonyl in gasoline in which the iron carbonyl is decomposable by exposure to light and a hydrocarbon of considerably higher molecular weight than gasoline and soluble therein.

11. As a composition of matter a solution of iron carbonyl in a hydrocarbon in which the iron carbonyl is decomposable by exposure to light and about 0.1 per cent of a hydrocarbon of higher molecular weight than the hydrocarbon first mentioned and soluble therein.

12. As a composition of matter a solution 7 of iron carbonyl in gasoline in which iron carbonyl is decomposable by exposure to light and about 0.1 er cent of a hydrocarbon of higher molecu ar weight'than gasoline and soluble therein.

In testimony whereof, we afix our signatures.

m 5. TIN LER-GUNRADL ANNELIESE KOSSUTH. 

